不同温度艾灸对高脂血症大鼠血脂及背根神经节瞬时感受器电位香草酸受体1 mRNA表达的影响

Effects of Moxibustion at Different Temperatures on Blood Lipids and TRPV1 mRNA in Dorsal Root Ganglion with Hyperlipidemia Rats

目的观察不同温度艾灸热刺激对高脂血症大鼠血脂及背根神经节瞬时感受器电位香草酸受体1(TRPV1)m RNA表达的影响,验证艾灸调脂疗效与激活TRPV1相关。方法采用高脂饲料喂养制作高脂血症大鼠模型。将60只SD大鼠随机分为正常组、模型组、38℃艾灸组和45℃艾灸组,每组15只。38℃艾灸组和45℃艾灸组均取"神阙"和双侧"足三里",每穴艾灸10 min/次,隔日1次,连续4周。干预结束后取血,氧化酶法检测血清胆固醇、三酰甘油、低密度脂蛋白胆固醇、高密度脂蛋白胆固醇含量;取背根神经节组织,实时荧光定量PCR检测TRPV1 m RNA表达。结果与模型组比较,艾灸组血脂指标均得到不同程度的调整,45℃艾灸组差异有统计学意义(P<0.05,P<0.01),且45℃艾灸组与38℃艾灸组比较差异有统计学意义(P<0.01);45℃艾灸组较其他3组背根神经节TRPV1 m RNA表达差异均有统计学意义(P<0.01)。结论艾灸调脂疗效与艾灸激活TRPV1相关。

Objective To compare the effects of moxibustion at different temperatures on blood lipid and TRPV1 in dorsal root ganglion with hyperlipidemia rats; To verify the correlation between efficacy of adjusting fat of moxibustion with activating of TRPV1. Methods The rat model of hyperlipidemia was made by high fat diet. 60 SD mice were randomly divided into four groups： control group, model control group, the 38 ℃ moxibustion group and the 45 ℃ moxibustion group, with 15 mice in each group. Acupoints Shenque and Zusanli were chosen under moxibustion for 10 minutes each time, once another day, for 4 weeks, in the 38 ℃ moxibustion group and the 45 ℃moxibustion group. Blood was taken after intervention, and blood TC, TG, LDL-C and HDL-C of the mice were detected by oxidase method; the dorsal root ganglion was taken to detect the expression of TRPV1 m RNA by real-time fluorescence quantitative PCR. Results Compared with model group, blood lipid indexes in moxibustion groups had different changes, with statistical significance compared with 45 ℃ moxibustion group（P0.05, P0.01）, and there was statistical significance between 38 ℃ moxibustion group and 45 ℃ moxibustion group（P0.01）; there was statistical significance in TRPV1 m RNA of dorsal root ganglion among 45 ℃ moxibustion group and other three groups（P0.01）. Conclusion The correlation between efficacy of adjusting fat of moxibustion with activating of TRPV1 has been confirmed.